>is there a way to simultaneously view a
>frame that is stopped while loading other

Flash keeps loading even when the timeline is stopped. But it won't carry
out frame actions (for instance, LoadMovie) until the frame is played. To
load another movie invisibly, create it so that it starts with a few empty
frames, the last of which has a Stop action. Then use TellTarget to make it
play when it's time to display it.